Answer: just use phot math
Step-by-step explanation:
Answer:Type of Number Example
Prime Number P=2,3,5,7,11,13,17,…
Composite Number 4,6,8,9,10,12,...
Whole Numbers W=0,1,2,3,4,…
Integers Z=…,−3,−2,−1,0,1,2,3,…
Answer:
vertex = (- 10, - 10 )
The equation of a quadratic in vertex form is
y = a(x - h)² + k
where (h, k ) are the coordinates of the vertex and a is a multiplier
To obtain this form use the method of completing the square.
Given
h(x) = x² + 20x + 90
add/subtract ( half the coefficient of the x- term )²
h(x) = x² + 2(10)x + 100 - 100 + 90
= (x + 10)² - 10 ← in vertex form
with (h, k ) = (- 10, - 10 )
210 pounds
First, we are going to find the exchange rate from dollars to pounds.
We know form our problem that 800 dollars are 560 pounds. so:
pounds per dollar.
Next, we are going to multiply our exchange rate by the number of dollars we want to change, 300:
We will get 210 pounds for 300 dollars
f
(
x
)
=
−
1
2
+
3
Explanation:
A quadratic function can be written in vertex form as:
a
h
k
where
,
is the vertex and
is a constant multiplier.
In our example the vertex
is
4
, so we can write:
Given that this passes through the point
, we must have:
Subtract
from both ends to get:
Divide both sides by
and transpose to find:
So our quadratic function can be written in vertex form as:
We can multiply this out and simplify as follows:
6
9
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